HAYWARD H400FD IF Code On Display
| CONF | DIAGNOSIS | PART MATCH | ACTION |
|---|---|---|---|
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85%
CONF
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Hayward Silicon Nitride Igniter
The 'IF' code indicates an Ignition Failure. This specific part is a Silicon Nitride igniter which is prone to developing microscopic cracks or surface oxidation over time, preventing it from reaching the temperatures necessary to ignite the gas-air mixture or failing to properly facilitate the flame sensing (rectification) signal back to the control board.
SKU: FDXLIGN1930
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CHECK PRICE |
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10%
CONF
|
Hayward Flame Sensor
If the heater actually ignites but then shuts off after 2-5 seconds and displays 'IF', the flame sensor is likely coated in carbon or corroded, preventing the ICB from 'seeing' the flame even though combustion occurred.
SKU: FDXLFLS1930
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CHECK PRICE |
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5%
CONF
|
Universal H-Series Integrated Control Board
If the igniter and sensor are tested and functional, the logic circuit on the ICB responsible for interpreting the flame rectification signal may have failed, necessitating a board replacement.
SKU: IDXL2ICB1930
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DIY Repair Guide
Watch exactly how to replace the Hayward Silicon Nitride Igniter.